Isolation of 1,5-dinitroanthraquinone
    1.
    发明授权
    Isolation of 1,5-dinitroanthraquinone 失效
    1,5-二硝基蒽醌的分离

    公开(公告)号:US3929841A

    公开(公告)日:1975-12-30

    申请号:US48521374

    申请日:1974-07-02

    Applicant: BASF AG

    Abstract: 1,5-DINITROANTHRAQUINONE IS ISOLATED FROM A NITRATION MIXTURE CONTAINING DINITROANTHRAQUINONES BY ALLOWING N-methylpyrrolidone to act on the nitroanthraquinone mixture. From 10 to 45% by weight of the nitroanthraquinone mixture remains undissolved and the undissolved material is separated from the solution. A dinitroanthraquinone is isolated which contains from 75 to 95% by weight of 1,5-dinitroanthraquinone and practically no Beta dinitroanthraquinones.

    Abstract translation: 通过允许N-甲基吡咯烷酮作用于硝基蒽醌混合物,从含有四氮杂环戊烷的硝化混合物中分离出1,5-四硝基四氢喹啉。 10至45重量%的硝基蒽醌混合物保持未溶解,并且将未溶解的材料与溶液分离。 分离出二硝基蒽醌,其含有75至95重量%的1,5-二硝基蒽醌,实际上不含β-二硝基蒽醌。

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